Sizes:  
  2 Hooks:  12 mm between clips,  
32 mm overall width.

 3 Hooks:  20 mm between clips, 
56 mm overall width.

4 Hooks:  20 mm between clips,
76 mm overall width.

 5 Hooks:  20 mm between clips, 
96 mm overall width.

   Can add up to 45 mm to your bra. 
No sewing required.